31445654407 has 2 divisors, whose sum is σ = 31445654408. Its totient is φ = 31445654406.

The previous prime is 31445654399. The next prime is 31445654431. The reversal of 31445654407 is 70445654413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31445654407 - 2³ = 31445654399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31445654507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15722827203 + 15722827204.

It is an arithmetic number, because the mean of its divisors is an integer number (15722827204).

Almost surely, 2^31445654407 is an apocalyptic number.

31445654407 is a deficient number, since it is larger than the sum of its proper divisors (1).

31445654407 is an equidigital number, since it uses as much as digits as its factorization.

31445654407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 806400, while the sum is 43.

It can be divided in two parts, 314456 and 54407, that added together give a palindrome (368863).

The spelling of 31445654407 in words is "thirty-one billion, four hundred forty-five million, six hundred fifty-four thousand, four hundred seven".